Door and window grating



March 13, 1928. ,662,117

A. M. KUHL DOOR AND WINDOW GRATING Filed Feb. 28, 1925 INVENTOR.

l/14. Wah

A TTORNE Y.

Patented Mar. 13,V 1928.v

UNITED STATES ALPHONS M. XUHL, `OF OMAHA, NEBRASKA.

noon AND wrNDov'v GRATING.

Application filed February 28, 1925. Serial No. 12,283.

The invention relates to window and door gratings, and has for its object to provide a device of this character which may be easily and quickly applied to a window or I dooropening, and constructed in a manner whereby unauthorized persons will be prevented from passing through the window or door opening when either sash or door is in open position, thereby allowing a room l to be thoroughly ventilated without danger from burglars.

A further object is to provide a window or door grating comprising spaced bars vertically disposed and through which bars l oppositely extending lockin bolts extend and are moved inwardly Lan outwardly by a rotatable sleeve, which hascentrally disposed therein right and left hand threaded members threaded in the `inner ends of the locking bolts. Also to provide set screw means on the inner sides of the vertically disposed bars for engaging and holding the the locking bolts in extended adjusted positions.

With the above'and other objects in view the invention resides in the combination and arrangement of parts as hereinafter set forth, shown in the drawing, described and claimed, it being understood that changes in the precise embodiment of the invention may be made within the scope of what is claimed withoutdepartin'g from the spirit of the invention.

In the drawing:-

Figure 1 is a view in elevation of the grating showing the same applied to a conventional form of window.

`Figure 2 is a view similar to Figure 1, but showing` an ornamental structure of 40 grating. 4

Figure 3 is a horizontal sectional view through the grating taken on line 3-3 of 'Figure 1.

`Figure 4 is a perspective view of a bracket .used where the grating can not be placed in the window opening.

.Figure 5 is anv enlarged horizontal sectional view through one of the locking bars showing the set screw.

Referring to the drawing, the numeral 1 designates a conventional form of window frame, in which are slidably mounted conventional forms of sash 2. Thev grating comprises vertically disposed parallel bars 3, which are connected together by horizontally `disposed bars 4, andjwhich bars 4 maintain the bars in uniform spaced relation at all times, and it will be seen that the grating substantially covers the window opening for preventing aperson from pass- Ying through the window opening, and at the same time allows passage of air and light.

Rotatably mounted in the bearings 5 of the vertically disposed bars 3 as well as slidably mounted, are locking bolts 6, which locking bolts may be extended to positions where their ends will be disposed in recesses 7 of the window frame. Locking bolts 6 are hollow and have threaded in their inner ends the right and left hand threaded bolts 7, which bolts have their inner ends formedl integral with the member 8, which is connectedbymeans of a pin 9 to the rotatable sleeve 10, which rotatable sleeve is disposed between bars 3 and is rotatably mounted on the slidable bolts 6, therefore it will be seen that when the sleeve 10 is rotated in one direction thev bolts 6 will be forced apart, and when rotated in the opposite direction the lbolts 6 will be drawn together, thereby allowing the grating to be Veasily and quickly placed in position or removed. Bolts 6 are held in extended position by means of set screws 11, carried by the inner sides of the bars 3, and which set screws, when tightened after the lookin bolt 6 has been extended, prevent the inward movement of the flocking bolts bv the rotation of the sleeve 10, and .by being disposed on the inner side ofl the bars 3 they can not be reached with a tool. 'lol further prevent the set screws from being loosened, said set screws are provided with recesses 12 in their outery ends which may be of various'shapes, whereby a special key will be required `for loosening i the set screws, consequently the set screws can not be loosened by an unauthorized person. The device has been shown as applied to a window frame, however it may be' applied to al door or to the brick outside the window frame if desired, and in case it is im ossible to dispose the device within the win ow-opening, and it is necessary to place the same on the outside brick or wall of the building, brackets 14. may be applied to said brick, and which brackets are provided with arms 15 having aperturesu 16 therein for the reception of the locking bolts 6.

Referring to Figure 2, the construction is substantially the same as Figure 1, however the upper ends of the bars 3 are provided with ornamental prong members 17, thereby not only excluding unauthorized .persons but at the same time giving an ornamental appearance to the device.

From the above it will be seen that a door or window grating is provided, which will positively prevent entrance of unauthorized persons to a building through a window or door andthat the device may be easily and quickly removed or replaced by an authorized person. It will also be. seen that sash fasteners may be entirely eliminated if desired thereby allowing the sash to be adjusted as desired for light and air.

The invention having been set forth what is claimed as new and useful is:-

1. The combination with a window rating comprising spaced bars connecte together by rods, of a locking device for locking said grating in a 'window opening, said device comprising a rotatable sleeve between the bars and engaging t-he bars, axially alined slidable bolts within the ends of the slee\'e and slidably mounted in the bars, a. member disposed within the sleeve and connected thereto centrally thereohsaid member being provided with right and left hand' threaded oppositely extending shafts threaded into the inner ends of the bolts and set yscrews carried by the innersides of the bars grating, said gratin bein disposed in a window o ening, o a loc'ing device for locking sald grating in the window, said device comprising a rotatable sleeve in the plane of the bars and engaging the inner sides thereof, axially alined shdable bolts within the ends of the sleeve and slidably mounted in the bars, a member disposed in the sleeve and connected thereto centrali thereof, said member being provided witl right and left hand threaded oppositely extending shafts threaded into the inner ends of the. slidable mounted bolts and setscrews carried by'the inner sides of the bars and cooperating with the bolts.

3. The combination with a window-grating comprising spaced bars rigidly connected together, of a locking device for said grating for locking said grating in a window opening comprising rotatable sleeves between t-he bars and engaging the bals, axially alined slidable bolts within the ends of the sleeves and slidably mounted in the bars, a member disposed within the sleeves and. connected thereto centrally thereof, said members being provided with'right and left hand threaded oppositely extending shafts threaded into the inner ends of the bolts and set screws carried by the inner sides of the bars and cooperating with the bolts.

In testimony whereof I hereunto affix my signature.

ALPHONS M. KUHL. 

